Due to ongoing demographic change and the relentless brainwashing of the younger generation (which may already be majority non-White in composition), the U.S. is going to be a one-party state soon. Since the Republicans have never opposed the subversion of the republic other than pretending to and in fact have been just as much in favor of the non-White changeover via legal and illegal immigration as the Dems, if a genuine populist third party speeds up the GOP's demise I'm all for it. It might actually cause conservatives to do some serious thinking and soul searching for once.
And the Dems could easily splinter to the point of a spinoff party starting, behind the radical left, openly anti-White, young non-White leaders that are emerging. People talk all the time about a possible upcoming civil war (recklessly so most of the time in my opinion), but in 1860 right before the War of Northern Aggression began there were four major parties contending the presidential election. The Republicans were the new upstart that ended up winning.
I've been involved in populist/nationalist third parties for a long time and pushing for them when there were none, but the reality is that the way the U.S. political system is now, any new party needs big bucks and big names behind it to overcome the draconian ballot access laws and other roadblocks that face smaller grassroots parties. Carlson and Coulter have the clout to get one started and off the ground in a big way, should they be so inclined. And I hope they come to realize that such a move is the only way politically to have an effect nationally on what otherwise will be an inevitable Democrat monopoly of power, perhaps as soon as next year.